Stone-channeling machine



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s. H. HOLVLBY. STONE GHANNELING MACHINE.

1Y0-508,016l y Patented Nov. 7,1893.

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STONE GHANNELING MAGHINB.

Patented Nov. 7, 1893.

WZL/ness es UNITED. STATES sEYMoUEYH. HOLLEY, E MARQUETTE, MICHIGAN.

PATENT OFFICE.

STONE-CHANNELING MACHINE.

SPECIFICATION forming part of Letters Patent No. 508,016, dated November '7, 1893.

Application filed March 6, 1893.

To all whom/,it may concern;

Be it known that I, SEYMOUR H. HOLLEY, a citizen of the United States, residing at 4Marquette,in the State of Michigan, have invented certain new and useful Improvements in Stone-Channeling Machines, of lwhich I do declare the following to be a full and exact description, reference being had to the accompanying drawings, forming a part of this specitication.

Figure l is a plan view ot' a machine embodying myimprovements. Fig. 2 isa view in side elevation. Fig. 3 is a view showing partly in plan and partlyn horizontal section the mechanism at one side of the machine, certain of the parts being removed. Fig. 4 is a fractional view in vertical section on line 4-4 of Fig. 2, parts being shown in elevation. Fig. 5 is a fractional view partlyvin side elevation and partly in vertical longitudinalsection through the adjusting mechanism of one of the operating levers. Fig. 6 is a fractional View partly in side elevation and partly in vertical section on line 5-5 of Fig. 3. Fig. 7 vis a detail front view of one of the slide bars at the end of the operating lever. Fig. 8 is a detail fractional view showing the upper portion of one of the slide bars for the operating levers, and the guide frame therefor.

My present invention has relation more particularly to that class of stone channeling machines wherein the cutting tools are raised and lowered by suitably driven operating levers.

My invention has for its object, first, to pro-l Y vide improvedgearing whereby motion is imi parted tothe operating leveror levers so that a quick downward motion and a slow upward motion will be imparted to the cutting tools, thereby securing not only a morev eifective action of the tools, but 'insuring also a material economy7 in steam or other power whereby the tools are operated; secondly, my invention has for its object to provide improved spring partsto meet the dierent requirements of.

eral No. '164.714- (No model.)

preferably consist of thelongitudinal bars A, I

A', and A2, and cross bars A3, A4, A5, A6 and A7, will be supported upon suitable truck axles and wheels B, B. Thetransverse bars A4 and A5 are extended beyond the sides of the machine and at the opposite ends of these bars are sustained the cutting tools C in suitable number and of appropriate construction. Each set of tools O is held within a tool stock or carrier consisting of the sections D and D', these sections being connected together bythe bolts d which serve to firmly clamp the tools C between the sections and upon the opposite ends of the transverse bars A4 and A5 are mounted the guide frames for the tool stocks, these guide Y frames being preferably formed of the cross` plate e7 suitably bolted as at e8 to the crossA bar E; and the lower part of each of the slide bars F is formed with a socket f', to receive the free end of one of the operating levers G. As each of the operating levers G, and the mechanism whereby itis sustained and driven are the same for each side of the machine, a description of one of these levers and the means whereby it is operated will answer for both. Each of the levers'G has a bifurcated end g the arms of which are attachedby cap plates g to the trunnion pins h of the shifting block H, that sets between the arms of the lever, the trunnion pins h extending through the slots t' that are formed in the standards I and I that rise from the extend- IQO through a correspondingly threaded perforation formed in the shifting block I-I, and the lower end of the screw K is formed with a plain portion 7c passing through `the cross,

plates 7a2 and 7c3 that are bolted to the ends of the cross bars A7 and AG. (See Fig. 5.) Suitable collars 3 and 4, and a nut 5 will serve to hold the adjustingscrew K against-displacement.

From the foregoing description it w-ill be `seen that when it is desired to shift the fulcrum of either of the levers G, to `meet the requirements of the work, as `for example, in beginning new work, this canbe readily done by turningthe adjusting screw K by means of *the hand wheel K.

The mechanism whereby the operating levers lGrrare driven will next be described.

Upon the `beams A, A and A2 are mounted the standards M, M and M2, that serve to sustain `the-crank shaft N, the cranks a, n of which are connected to suitable pitman rods MO and 0' that are opera-ted by the piston within `the cylinders `O2 ot' a vertical engine that "is sustain-ed by the `transverse baseplate Plcarried by the main frame. Upon the cran-k sh aft N are also mounted the usual eccentri cs `trate or'describe the engineor its -connections with `greater particularity.

While I have shown a vertical engine, it is i manifest that my invention is not restricted thereto, as the driving of the crankshaft .may be edected in any suitable manner.

Uponthe crank shaft N are keyed the elli ptical -gear wheels R and R that engage with corresponding gear wheels S and S upon the shaft T, that is journaled within suitable boxes on the tops ofthe standards M, M and M2 that rise from the main frame. The ends of the shaft T are exten-ded beyondtheirbearings and upon each end is liXed a disk `carrying thecrank pin t whereon is held a block V `that is mounted in manner free to slide upon the vertical rods o, o. The rods r, `v have their lower headed ends extending through the bifurcated block W that straddlcs the operatinglever G and is pivotally `connected thereto by the through bolt tv. The upper ends of the rods o, fv extend through the fcross head r2 which is held in place on the rods by the nuts o3, and between the cross head o2 and the block "V, and as well `also between the block o and the pivot head WV are the springs X and X which serve to cushion the stroke of the operating lever so as to avoid all jar and as well also compensate for any inequalities in the length of stroke of the tools.

From the foregoing description itwill be seen that when revolution is imparted to the crank shaft N it will be transmitted from said shaft through the elliptical gears R, R and S, S', to shaft T and crank pins t, and to the operating levers G through the medium of connections between said levers and the crank pins. It will also be seen that the elliptical gears `serve to give an alternate quick and slow motion to the operating levers G, these gears being so set that the quick motion shall be given to the operating levers upon their down-stroke and the slow `motion shall be given to these levers upon their npstroke. This use of elliptical gears for imparting movement to the operating ievers is highly advantageous, not only for the reason that an increased `force of blow is thereby given to the tools, but also, since the slow movement is imparted to the operating levers upon their 11p-stroke, amuch more effective application of the power is had for raising the heavy tool stociks and tools, and as well also the levers, and this is particularly importantwhen the apparatus iis `used in making very deep cuts.

While I have described "what I regard as the best embodiment lof my invention, it is mani-rest that the precise details of construction above set out may be varied "by the skilled mechanic without departing from the spirit of "my invention.

In lieu of double engines nO2 a single one may be used, the crankshaft N being then located beneath the eccentric shaft T, and driven by vbcvebgear `from the engine. The elliptic gear between said shaft N T would however be retained. Since `the mode yof applying the engine power forms no part of the improvement and in thechange proposed concerns merely a greater compact/ness in width i of the machine it is unnecessary to exhibit.

So too, the fulcrum Yand point of `applied power for the operating levers G can be reversed, i. e. the shafts N T and adj uncts beset at the end of the machine and the standards I I with fulcrum blocks Il be set in their place at the center thereby simply changing the order or character `of lever G. The reaction 4springs X X can be elliptic in form or be blocks of rubberif desired. Theseandother like modifications in detail which ythe `skill of the mechanic will `suggest are equally within the essential scope of uthe improvements set forth.

Having thus described my invention, what I claim as new, and `desire to secure by Letters Patent, is-

l. In a stone channeling machine the coinbination with the main frame, of suitable standards rising from said frame, a crank shaft anda driving shaft journaled in said standards, the ends of said driving shaft extending beyond said standards, tool-carrying IOC,

IIO

operating levers arranged at the sides of the -Ymain frame and connecting withy the Vdrivingl shaft, and elliptic gears connecting the crank shaft and the driving shaft, and so arranged 5 that the quick downward motion and a slow upward motion will be imparted to the operating levers, substantially as described.

2. In a stone channeling machine, the corn-v bination with the operating lever and suitable ro means for imparting movement thereto of a vertically movable fulcrum block to which said lever is connected, a screw `for adj nsting said fnlcrnm block securely j ournaled at both ends and extending thronghfsaidv block, and standards having slots to receive the trun- 15 nions of said fulcrurn block, substantially as described.

SEYMOUR H. HOLLEY.

` Witnesses:

SAMUEL V. RAWLINGS, N. G. DEHAAs. 

